isa_device.hh

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/*
 * Copyright (c) 2014, 2017 ARM Limited
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 *
 * The license below extends only to copyright in the software and shall
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 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
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 * modified or unmodified, in source code or in binary form.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
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 * this software without specific prior written permission.
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * Authors: Andreas Sandberg
 */

#ifndef __ARCH_ARM_ISA_DEVICE_HH__
#define __ARCH_ARM_ISA_DEVICE_HH__

#include "arch/arm/registers.hh"
#include "base/compiler.hh"

class ThreadContext;

namespace ArmISA
{

class ISA;

class BaseISADevice
{
  public:
    BaseISADevice();
    virtual ~BaseISADevice() {}

    virtual void setISA(ISA *isa);
    virtual void setThreadContext(ThreadContext *tc) {}

    virtual void setMiscReg(int misc_reg, RegVal val) = 0;

    virtual RegVal readMiscReg(int misc_reg) = 0;

  protected:
    ISA *isa;
};

class DummyISADevice : public BaseISADevice
{
  public:
    DummyISADevice()
        : BaseISADevice() {}
    ~DummyISADevice() {}

    void setMiscReg(int misc_reg, RegVal val) override;
    RegVal readMiscReg(int misc_reg) override;
};

}

#endif // __ARCH_ARM_ISA_DEVICE_HH__